Results 51 to 60 of about 16,733 (217)

An improvement of the Lagrangian analysis method based on particle velocity profiles

open access: yesEPJ Web of Conferences, 2018
In general, techniques used in studies on dynamic behaviour of materials could be classified into two categories, namely the split Hopkinson pressure bar technique (SHPB) and the wave propagation technique (WPT).
Ding Yuanyuan
doaj   +1 more source

Total Lagrangian Finite Element Formulation of the Flory-Rehner Free Energy Function

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2014
The total Lagrangian finite element implementation of the Flory-Rehner free-energy function in the framework of a hyperelastic material model is addressed. It is explicitly given all the equations required to implement this material model in an implicit
Mario J. Juha
doaj   +1 more source

Operations Research‐Based Formalisation and Design of Sustainable Reverse Logistics for E‐Waste Supply Chains

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This study demonstrates how a profitable, lean, and environmentally responsible e‐waste reverse logistics system can be designed using integrated Operations Research (OR) techniques. Addressing the growing urgency of responsible consumption (UN SDG 12) and the projected rise of the e‐waste sector to USD 137.60 billion by 2029, the research ...
Sheeba Pathak, Hajar Fatorachian
wiley   +1 more source

Solving Spatial Optimization Problems via Lagrangian Relaxation and Automatic Gradient Computation

open access: yesISPRS International Journal of Geo-Information
Spatial optimization is an integral part of GIS and spatial analysis. It involves making various decisions in space, ranging from the location of public facilities to vehicle routing and political districting.
Zhen Lei, Ting L. Lei
doaj   +1 more source

SO2 Transfer Enabled by an Easy‐to‐Handle Ionic Liquid

open access: yesChemistry – A European Journal, EarlyView.
Best of both worlds: The ionic liquid [NEt3Me][Cl(SO2)n] unites the atom economy and low cost of sulfur dioxide with the safety and applicability of common surrogates, streamlining SO2 transfer to access to 3‐sulfolenes, sulfonamides, and SuFEx reagents.
Johanna S. Sturm   +11 more
wiley   +1 more source

From Charge‐Transfer Adducts to (Tri)Halide‐Templated Supramolecular Cages: Covalent vs Ionic Products in the Reactions of Pyridin‐4‐ylthio‐Substituted Tetrathiafulvalene With Dihalogens and Interhalogens

open access: yesChemistry – A European Journal, EarlyView.
The reactions between tetra(pyridin‐4‐ylthio)tetrathiafulvalene and Br2/I2/ICl/IBr led to a variety of products, including a rare example of neutral 1:4 CT adduct and ionic products showing supramolecular cage motifs at (tri)halide templates. The nature of the reaction products was elucidated based on XRD analysis, Raman spectroscopy and QTAIM, NCI ...
Anna Caria   +6 more
wiley   +1 more source

Optimization of 3D‐Printed Structured Packings—Current State and Future Developments

open access: yesChemie Ingenieur Technik, EarlyView.
This paper gives an overview about structured packing development for distillation, surveying heuristic development cycles, computational fluid dynamics simulations, and additive manufacturing techniques. The emerging application of shape optimization to improve packings is emphasized, and its benefits, impact, and limitations are discussed.
Dennis Stucke   +3 more
wiley   +1 more source

Swiss and Austrian Foehn revisited: A Lagrangian-based analysis

open access: yesMeteorologische Zeitschrift, 2015
Two different South Foehn types have been described in the literature: the Swiss Foehn is characterized by significant ascent on the southern side of the Alps, hence fulfilling a requirement of the thermodynamic Foehn theory associated with latent ...
Michael Würsch, Michael Sprenger
doaj   +1 more source

WKBJ analysis in the periodic wake of a cylinder

open access: yesTheoretical and Applied Mechanics Letters, 2015
The nature of the three-dimensional transition arising in the flow past a cylinder is investigated by applying the Lifschitz–Hameiri theory along special Lagrangian trajectories existing in its wake.
F. Giannetti
doaj   +1 more source

Methodological Approach for Particle Transport: Analyzing Influential Factors and Comparing Simulation Software

open access: yesChemie Ingenieur Technik, EarlyView.
This study determines the dust filtration behavior of venting tubes in automotive headlights. Numerical simulations using Meshfree and STAR‐CCM+ and suitable experiments were conducted to analyze the airflow field, the particle transport, and the filtration efficiency.
Cornelia Müssig   +4 more
wiley   +1 more source

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